/*
 * Copyright 2021 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.dashbuilder.dataprovider.kafka.metrics.group;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.dashbuilder.dataprovider.kafka.metrics.KafkaMetricCollector;
import org.dashbuilder.dataprovider.kafka.model.KafkaMetricsRequest;

public interface MetricsCollectorGroup {

    List<KafkaMetricCollector> getMetricsCollectors(KafkaMetricsRequest request);

    public static String[] mergeAttrs(String[] a, String[] b) {
        return Stream.of(a, b)
                     .flatMap(Stream::of)
                     .distinct()
                     .toArray(String[]::new);
    }

    public static List<KafkaMetricCollector> merge(KafkaMetricCollector[]... collectors) {
        return Stream.of(collectors)
                     .flatMap(Stream::of)
                     .distinct().collect(Collectors.toList());
    }

}